function doOpen(url)
      {
	if (get_cookie('popunder')==''){
	        win = window.open(url, 'test', 'toolbar,status,resizable,scrollbars,menubar,location,height=768,width=1024');	
                 var today = new Date();
                 today.setTime( today.getTime() );
                 expires = 5 * 1000 * 6;
                 var expires_date = new Date( today.getTime() + (expires) );
                 document.cookie="popunder=yes;expires=" + expires_date.toGMTString()
	}
      }
      function init()
      {
        var win = doOpen('http://www.4streaming.com/link.php');        
      }

	function get_cookie(Name) {
	  var search = Name + "="
	  var returnvalue = "";
	  if (document.cookie.length > 0) {
	    offset = document.cookie.indexOf(search)
	    if (offset != -1) { // Se il cookie esiste
	      offset += search.length
	      end = document.cookie.indexOf(";", offset); // Inizio
	                                                                                
	    if (end == -1) // Fine
	         end = document.cookie.length;
	         returnvalue=unescape(document.cookie.substring(offset, end))
	      }
	   }
	  return returnvalue;
	}